Core/Spells: fix crash when loading custom spell attr with invalid spellid
Core/Spell: Handle SPELL_AURA_FORCE_REACTION missing cases

Always check forced reputation ranks before any other faction check to get the reaction between 2 units.
Fixes #5790
[TW199] - Core/Scripts: Ulduar - add a check to the Ancient Gate of Keepers so it's unlocked after crashes if the conditions are met
Core/Chat: Fix a new issue caused by c0224dd7ca9a39034518bd7e6285702636749929 which would trigger false positives for CHAT_MSG_AFK and CHAT_MSG_DND.
Core/Misc: remove error log, which returns false positives
Merge branch 'master' of https://github.com/TrinityCore/TrinityCore
[TW200] - Possible CD fix for DK pet issue.